how do i change my font ?

Hey EPIC guys. So i have seen how you guys did you default engine font , so i imported mine the same as you did and created a new material with the (vertex color,lerp and font) attached to the main material bored but i have one issue , my font comes out white with a blue dot on either side and to help you Guys that work at Epic heres an example .

Place down a text render and go into it (details) and change it to tiny font or whatever other font you want besides the default and you will see what i mean by its going all white.

Please can somebody help me
Thanks in advance

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